MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 577fb88c1647462cc74134947f959c3ab64519ef0d94c87c241a17acbbdfb3c3. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


Formbook


Vendor detections: 15


Intelligence 15 IOCs YARA 4 File information Comments
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SHA256 hash: 577fb88c1647462cc74134947f959c3ab64519ef0d94c87c241a17acbbdfb3c3
SHA3-384 hash: 0db6044397cb4ced7184764025ecd086e3eaf9f03bedb72d0ffea7df8084609138b516ad6ec02a5d03a70f66a578df43
SHA1 hash: 7cb746e130871078e3ffc162d50b4fd40f9cd7a6
MD5 hash: 153910137dfa6745a9f34ae31f0f9e03
humanhash: coffee-jig-cola-monkey
File name:PO_87910219.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:542'720 bytes
First seen:2022-06-27 15:53:31 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'743 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:5FxARPCuK/3MlFfRDi8ShmJAdpiNy7H9+VEQS4XGAkiPH:HQIA/okJCQVEQSaAi
TLSH T191B401B5BBD7FD56D6552633D4E10410037A93CB5903E76F22CEB3290E633E98846ACA
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon b2f949b1bafab8b0 (18 x AgentTesla, 17 x Loki, 17 x Formbook)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
256
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
PO_87910219.exe
Verdict:
Malicious activity
Analysis date:
2022-06-28 00:53:27 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/2a801e6e-f98a-4ff9-b981-01a23c51582b

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/283665/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Unauthorized injection to a recently created process
Creating a file
Сreating synchronization primitives
Launching a process
Launching cmd.exe command interpreter
Searching for synchronization primitives
DNS request
Sending an HTTP GET request
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
greyware packed
Link:
https://www.filescan.io/uploads/62b9d2dc197c837506c766ee/reports/0c58b32a-92a8-4521-8f73-9f37ecb43c7e/overview
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/b559615d-c328-4a84-af19-e98650674acf
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1020604
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Uses netsh to modify the Windows network and firewall settings
Yara detected AntiVM3
Yara detected FormBook
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 653109 Sample: PO_87910219.exe Startdate: 27/06/2022 Architecture: WINDOWS Score: 100 31 www.wuffaktur.com 2->31 33 www.ymdy1.com 2->33 41 Snort IDS alert for network traffic 2->41 43 Malicious sample detected (through community Yara rule) 2->43 45 Antivirus detection for URL or domain 2->45 47 9 other signatures 2->47 11 PO_87910219.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\AppData\...\PO_87910219.exe.log, ASCII 11->29 dropped 59 Tries to detect virtualization through RDTSC time measurements 11->59 61 Injects a PE file into a foreign processes 11->61 15 PO_87910219.exe 11->15         started        signatures6 process7 signatures8 63 Modifies the context of a thread in another process (thread injection) 15->63 65 Maps a DLL or memory area into another process 15->65 67 Sample uses process hollowing technique 15->67 69 Queues an APC in another process (thread injection) 15->69 18 explorer.exe 15->18 injected process9 dnsIp10 35 13127pfeileave.com 15.197.142.173, 49830, 80 TANDEMUS United States 18->35 37 www.300wcq.com 103.233.253.186, 49817, 80 POWERLINE-AS-APPOWERLINEDATACENTERHK Hong Kong 18->37 39 4 other IPs or domains 18->39 49 System process connects to network (likely due to code injection or exploit) 18->49 51 Uses netsh to modify the Windows network and firewall settings 18->51 22 netsh.exe 18->22         started        signatures11 process12 signatures13 53 Modifies the context of a thread in another process (thread injection) 22->53 55 Maps a DLL or memory area into another process 22->55 57 Tries to detect virtualization through RDTSC time measurements 22->57 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/577fb88c1647462cc74134947f959c3ab64519ef0d94c87c241a17acbbdfb3c3/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-06-27 08:54:36 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
16 of 26 (61.54%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=k573rdawi5dczr2bgskh7fm4hk3ekgppbwkmq7bedil2zo67wpbq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:nxmu loader persistence rat spyware stealer suricata
Link:
https://tria.ge/reports/220627-tb7fyseab8/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Deletes itself
Reads user/profile data of web browsers
Blocklisted process makes network request
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
Unpacked files
SH256 hash:
1e9db8c899496e3aa1ba1e5b47e7594b80d53609d06ca964edbdfe7d0ef48557
MD5 hash:
c055a82590c56942b6787520dc4963f4
SHA1 hash:
02c3bd5c47700fac76207f925fb214a2ab3e1bb8
Detections:
XLoader
Create hunting rule
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/283542bc-2241-43ed-9bb5-7931d5d349e2/
Parent samples :
0cc6dc50f65b97d583bb61815723837ece0c84d8c741b0aebc4c8762eab59d31
cdd6264538fba3499dded38721c63aafe76b4102ecf047282a32244bbd35fcd1
577fb88c1647462cc74134947f959c3ab64519ef0d94c87c241a17acbbdfb3c3
68213ac03f57cdeb622a75cf6e781a7e6e7c4b5aa21d7f3d899afd336059ff8c
SH256 hash:
0aa8ea56f670ef5041fe87ee1a27b6623c2cf7996ed489214aa076996ca40cac
MD5 hash:
faf84cab64260654988db2f9157f8f89
SHA1 hash:
e1e6ebeaf252c78e74c1355cdefc6a2c52cfab70
Link:
https://www.unpac.me/results/283542bc-2241-43ed-9bb5-7931d5d349e2/
SH256 hash:
0cb6aef1fa57d11408e47ae071485ef8f48c2982997b8d74b47a4151d85b978c
MD5 hash:
843aa6edf83bff7b61c6a5369ef41e95
SHA1 hash:
d1bfeec8eaac9a1dacf2f7062ce964d8e7d77085
Link:
https://www.unpac.me/results/283542bc-2241-43ed-9bb5-7931d5d349e2/
SH256 hash:
b3442b3e26b7fafcf2cfcad97851049da12579b3243d27091bcec7712b4c51df
MD5 hash:
7081c1e749927b130dcf657b9a2184ba
SHA1 hash:
7e5461a78e055891d37dea90181d52591eb7b75e
Link:
https://www.unpac.me/results/283542bc-2241-43ed-9bb5-7931d5d349e2/
SH256 hash:
ab3386445b7a04ffad40a71f33978299b7afd29b7061e12c94fbed3807a46389
MD5 hash:
2f5fdb8905c3308ecca1a256cbd130e1
SHA1 hash:
13b3728ba0f0e6ee7e5943acfc62ef5f36a9041d
Link:
https://www.unpac.me/results/283542bc-2241-43ed-9bb5-7931d5d349e2/
SH256 hash:
577fb88c1647462cc74134947f959c3ab64519ef0d94c87c241a17acbbdfb3c3
MD5 hash:
153910137dfa6745a9f34ae31f0f9e03
SHA1 hash:
7cb746e130871078e3ffc162d50b4fd40f9cd7a6
Link:
https://www.unpac.me/results/283542bc-2241-43ed-9bb5-7931d5d349e2/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.45
Link:
https://yomi.yoroi.company/submissions/577fb88c1647462cc74134947f959c3ab64519ef0d94c87c241a17acbbdfb3c3

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

Formbook

Executable exe 577fb88c1647462cc74134947f959c3ab64519ef0d94c87c241a17acbbdfb3c3

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/283665/

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